苏联工人德米里也夫建议改进切断刀的结构,用机械夹持法来装夹硬质合金刀片。这种切断刀,可以用来进行高速切削,当採用切削速度150公尺/分时,它的寿命比銲接刀片的切断刀要长得多。高速切断刀的结构如附图,图中1是刀杆,上面刻有凹槽。2是钢板,嵌入刀杆1的凹槽中,并銲接牢靠。在钢板2上开有15°的切口,硬质合金刀片3和斜楔4就装在这个切口中。硬质 Democrat Yevgeni, a Soviet worker, suggested improving the structure of the cutting knife and clamping the carbide blade by mechanical clamping. This cutting blade, which can be used for high-speed cutting, has a much longer life than cutting blades for welding inserts at a cutting speed of 150 m / min. High-speed cutting knife structure shown in the drawings, the figure 1 is a knife bar, engraved with grooves. 2 is a steel plate, embedded in the groove of the arbor 1, and welded securely. A 15 ° cut is made in the steel plate 2, and the cemented carbide insert 3 and the wedge 4 are mounted in this cut. Hard